Efficient polishing of additive manufactured titanium alloys. Data
Description
Additive manufactured parts presented in were developed at the Israel Aerospace Industries (IAI) and manufactured at The Israel Institute of Metals of the Technion using the process parameters recommended by the machine manufacture EOS, except the recommended "Stripe-width" which was doubled. The used machine was ALM EOS M290. The parts were developed for evaluation of surface treatment techniques via fatigue testing, thus 8 locations of the tensile stress concertation of Kt = 3.2 were introduced as highlighted in red in Fig. 3 in the main article. The part geometry enables: • Multiple load paths via branching / junctions. • Surface roughness conditions of a geometrically complex structure having relatively hidden radii surfaces. • Local differences (gradients) in the thermal mass. The mechanically weakest axis, i.e., z axis, of the parts is parallel to the part loading axis. In total 15 parts were plasma electrolytic polished (PeP), with 6 of them being particle blasted (PB) before PeP. The PeP conditions are given in PDF format. As-built, PeP and PB+PeP samples underwent same cyclical tensile loading testing in order to determine their fatigue resistance. It must be mentioned that the target results of the fatigue testing was successful 700 000 cycles. None of the tested surface treatment technologies could provide satisfactory results as noted in the main article. A photograph of as-built samples that failed the cyclical loading tests is given in JPG format. MMPDS data for Ti-6AL-4V Sheet configuration, Kt=3 and the reasons for using this data is presented in JPG format. Additionally, micrographs and surface roughness of the parts after after particle blasting is provided in JPG and PDF formats respectively.
Files
Steps to reproduce
1. Manufacture parts out of titanium alloy. 2. Polish using sand blasting, PeP and EP at provided conditions. 3. Perform cyclical tensile loading at described conditions.